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1 w "H'OARD, Gas Regulator No. 'I2,509. Patented March 13, 1855.

PETERS, Pmwulhu n hnr. Walhlngtou. I). z;

UNITED STATES PATENT OFFICE.

,I. HOABD, F PROVIDENCE, RHODE ISLAND.

GAS-REGULATOR.

i e Specification ofLetters IPatent No. 12,509, dated March 13, 1855.

To all whom it may concern: I I

full, clear, and exact description of the same,

Be it known that I, LW. HOARD, of the city and county of Providence andState of Rhode'lsland, have invented a new and useful Improvement inGas-Regulators and I do hereby declare that the following is a referencebeing had to the accompanying my invention. e I

j Myinvention consi stslin a certain arrange ment of antinvertedfioatingcup upon which the gas acts to contro-li the opening of-the induction orregulating valve, combined :With the application to the lsaid cup} of anuniform pressure on them burners is at all timesmaintained. 1 v I I A istheregulatingchamber placed in the supply pipe, which may consist of anup-' right icylindrical or otherl formed vessel drawing, which forms apart of this specification andrepresents a Vertical central section of aregulator constructed according to air spring or its equivalentl iforthepurpose of increasing or ,jdiminishing the resistance ofwthe said cuputol the pressure of the gas as r the pressure in the [pipe increases ordimin- Wishes by reasonoffa le'ss or greater consumption or otherwise, wereby ea, desirable and made of tin plate orfotherlight metal, a, is

he inlet,and b the outlet "of the pipe to" and from the said chamber.

a isadiaphragm placedbetween the inlet and outlet to receivetheinduction or regulating valve B, which is of the form ofan invertedcone. I I a e 1 C, is the invertedpup-which floats in quicksilver orotherfluidcontained in an annular formed well D, in the bottom of thechamber A, and isjconnected directly to the bottom of the, valve by astem d, which is continued; throughthe bottom of the chamberfo-rlthepurpose of being weighted to T graduate the'p'ressure in the pipe.

The interior or underside of the cupis exposed to the atmosphere 1 whichhas free access through the openinge, in the bottom of the chamber andonly the upper side is exposed to the pressure of the gas. The sides ofthe .cup are made double, in order that a quanof the quicksilver.

tity of air maybe confined in the annular space f within them and abovethe surface The air thus confined in f serves as a spring tocounterbalance the pressure of the gas and gives the requisite buoyancyto the cup, its force increasing or diminishing as it becomes compressedor is allowed to expand by any increase or d1- .minution of the pressureof the gas in the chamber acting above the cup until the valve isbalanced in the position necessary to allowof the passage of so much gasas is necessary to sustain the desired pressure at the outlet 6.

It may be well to mention that I consider as equivalents to the airspring f, a spiral or other spring applied to partly suspend the valveand cup from the top of the chamber A, or a float of wood orsome buoyantmaterial ,applied to or forming the sides of the cup. a

I consider this regulator to possess advantages over others in commonuse, in its extreme simplicity and small cost of construction while itis as effective as the best. This regulator produces a perfectly steadylight, no flickering whatever being visible and in this respect issuperior to all others known to me.

I am aware that the inverted cup has been and is employed by Kidder andothers and therefore I disclaim it, irrespectively of the peculiararrangement and combination herein described. And

What I claim as my invention and desire to secure by Letters Patent, is

The arrangement of the lnverted cup so that only the upper side orexterior is exposed to the pressure of the gas, and the underside orinterior is exposed to the atmosphere,when this is combined with theapplication to the said cup of the air spring f or its equivalentsubstantially as and for the purposes herein set forth.

i I. W. HOARD.

Witnesses:'

H. C. GARDINER, J.'B. KIMIBALL.

